Band resaw-machine.



S. B. RANGER.

BAND RBSAW MACHINE.

v Arrnwmmn FILED APR. 9, 1912. ,Q62,35. Patented May 20, 1913.

2 SHBBTS"SHEET 1.

S. E. RANGER.

BAND RESAW MACHINE.

APPLICATION FILED APR. 9, 14:12.

1,062,358. Patented May 20. 1913.

L 2 SHEBTS-SHEET 2 anucntor,

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dltoznn SAMUEL E. RANGER, OF HILTS, CALIFORNIA.

BAND RESAW-MACHIN E.

Specification of Letters Patent.

Patented May 20, 1913.

Application filed a rn 9,1912. Serial No. 689,613.

To all whom it may concern: 4

Be it known that I, SAMUEL E. Rnnonn, a citizen of the United States, residing at Hilts, in the county of Siskiyo-u and State of California, have invented certain new and useful Improvements in Band Resaw- Machines, of which the following is a specification, reference being had to the accompanying drawings. i

This invention-relates to improvements in band resaw machines and has for its primary object to provide improved means for mounting and adjusting the crowding wheels for the saws.

Another object of the invention resides in the provision, of independently adjustable sets of crowding. wheels arranged in upper and lower pairs for use in connection with a machine provided with quadruple bands and. arranged in pairs whereby the. bands of each pair may be adjusted with relation to each other and also with relation to the 7 other pair of band saws.

Still another object 'of the invention is to provide means whereby the durabilty and working efficiency of band resaw machines is materially increased without materially adding to the cost of manufacture.

With the above and other objects in view, the invention consists of the novel features of construction, combination and arrangement of parts hereinafter fully described and claimed, and illustrated in the accom panying drawings, in which- Figure 1 is a side elevation of a quadruple band resaw machine embodying the present invention; Fig. 2is a top plan view; Fig. 3 is a section taken on the line 3-3 of Fig. 1; and Fig. 4 is a detail section taken on the line 4-4 of Fig.1.

' Referring in detail to the drawings, 5. designates the spaced vertical uprights of rods 9 are secured, one of said rods being arranged adjacent to each end of the frame bar and. disposed in the vertical plane of the up or and lower band wheels 7. The. fsupporting members 10 are provided vertica E with the lateral tubular extensions 11 intermediate of their ends which are" keyed upon thecylindrical rods 9 for sliding movement. An adjusting screw 12 is threaded in each of the members 10 and hasone of its ends swiveled upon the inner end of the rod 9 as shown in Fig. 3. The other end of this adjusting screw 'is provided with a hand wheel 13 whereby the screw may be rotated to move the member 10 inwardly or outwardly.

Upon the lower end of each of the vertical members 10 an inwardly extending'lateral arm 14 is ri idly fixed and similararms 15 are mounte upon the upper ends of said members for longitudinal sliding movement; These latter arms carry the threaded sleeves 16 to receive the upper ends of the threaded adjusting rods 17. The lower ends of these rods are mounted in suitable hearings on the arms 14 and are provided with the beveled gears 18 with which similar gears 19 fixed upon the shafts 2Q engage. The shafts 20 are provided with suitable hand wheels 21. Upon the upper and lower arms 14. the crowding wheels 22 are rotatably mounted,

the shafts 23 ofsaid wheels projecting beond the opposite faces of the wheels and cing mounted at their extremities in the bearings, 24 fixed upon the arms 14 and 15. By tproviding a support for. each end of the sha ts 23, liability of said shafts springing or bendin during the operation of the ma chine is. o viated.

Upon the bed of the machine frame the spaced vertical rollers 25 are mounted between which the material to be sawed passes. Directing plates 26 are also arranged in pairs to coiiperate with said rollers and maintain the material in position whereby thesaws are relieved of undue strain. The

saws, indicated at 27 pass around the band wheels 7 in the usual manner and extend between the opposed upper and lower crowding rollers22 in parallel relation to each other. It will 'be obvious that by simply adjusting the opposed upper and lower pairs of rollers by means of the screws 12, the opposed portions of the saw bands may be spaced apart as desired so that the material is sawed to the required thickness. By arranging the saw bands in s aced pairs, the material without passing beyond the first pair of opposed bands may be a ain sawed-by the rear palr of bands which have been adjusted to space the. parallel portions thereof differently from the other pair of saw blades. Thus a double sawing action is simultaneously carried on whereby the completion of the work is greatly facilitated.

From the foregoing description taken in connection with the accompanying drawing it is believed that the construction and manner of operation of my resawing machine will be fully understood.

While the crowding wheels22 are preferably provided with smooth peripheries, it will be understood that they may be circumferentially grooved if desired to receive the fine particles of wood or saw dust whereby heating is prevented and the bands will at all times maintain a close engagement upon the peripheries of the wheels or rollers.

The machine as a whole is of comparatively simple construction, durable and efficient in its operation and may be manufactured at comparatively small cost.

While I have shown and described the preferred construction and arrangement of the various parts, it will be obvious that the invention is susceptible of considerable modification without departing from the essential feature or sacrificing any of the advantages thereof.

Having thus described the invention what is claimed is 1. The combination with a frame structure, spaced pairs of upper and lower band saw guide wheels mounted therein, of laterally movable vertical supports mounted in said frame, lower stationary crowding wheels mounted upon said supports, upper crowding wheels vertically movable upon the supports, means mounted upon said supports for adjusting the upper crowding wheels with relation to the lower crowding wheels and varying the cutting length of the band saws, and additional means for adjusting each pair of supports laterally with relation to each other to space the opposed portions of the band saw.

2. The combination with a frame structure, spaced pairs of upper and lower band saw guide wheels mounted therein, of horizontally disposed inwardly extending arms rigidly secured to the frame structure, vertical supports, sleeves carried by said supports telescopically engaged upon said arms, adjusting screws threaded in the supports and connected to the arms to adjust the supports of. each pair laterally with relation to each other, stationary lower crowding wheels mounted-upon each of the supports, vertically movable upper crowding wheels mounted 'upon said supports, and means carried by the supports for adjusting said upper crowding wheels to vary the cutting length of the band saws.

In testimony whereof I hereunto'afiix my signature in the presence of two witnesses.

SAMUEL E. RANGER. Witnesses:

A. H. DAVIS T. W. HILL. 

